| Fe304磁流体对铀（VI）的吸附研究 |
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| 引用本文： | 贾继云,袁亚莉,黄芬,徐丽华,刘雅兰,黄笑寒. Fe304磁流体对铀（VI）的吸附研究[J]. 南华大学学报(自然科学版), 2011, 25(2) |
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| 作者姓名： | 贾继云 袁亚莉 黄芬 徐丽华 刘雅兰 黄笑寒 |
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| 作者单位： | 南华大学化学化工学院,湖南衡阳,421001 |
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| 基金项目： | 湖南省科技厅基金资助项目 |
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| 摘 要： | 为降低铀对环境的影响，研究纳米磁流体对铀（VI）的吸附行为．用沉淀法制备了磁粒径10～20nm的Fe2O2磁流体，考察了该磁磁流体对铀（VI）吸附的各种影响因素，结果表明：在纳米磁流体浓度为2．5∥L、温度35~C、pH=3、吸附时间t=30min的条件下，对3×1014mol／L铀的吸附萃取率可达到84．15％．该吸附过程符合假设的二级动力学模型．
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| 关 键 词： | 纳米粒子 四氧化三铁 铀(VI) 动力学模型 |
The Adsorption Behavior of Uranyl Ion on the Fe304 Ferro Fluids |
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| Abstract: | The water based ferrofluids with saturated magnetization 10 -20 nm was pre- pared by chemical coprecipitation, which was characterized by TEM. The adsorption of Ura- nyl ion on the of ferrofluids was studied in this paper. The result indicates that the optimum experiment condition is the ferro fluids ion of 2.5 g/L, temperature35~C , pH value 3 and adsorption time 30 rain, under which circumstances, the extraction rate of the Uranyl ion （3 x 10-4tool/L） reaches 84. 15%. The adsorption process follows kinetics, which indi- cates the adsorption is a monolaper adsorption. |
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| Keywords: | nanoparticle magnetite Uranyl ion kinetic model |
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